CPPLapack Code

//=============================================================================
/*! dssmatrix=dssmatrix operator */
inline dssmatrix& dssmatrix::operator=(const dssmatrix& mat)
{
#ifdef  CPPL_VERBOSE
  std::cerr << "# [MARK] dssmatrix::operator=(const dssmatrix&)"
            << std::endl;
#endif//CPPL_VERBOSE
  
  if(Array!=mat.Array){ // if it is NOT self substitution
    copy(mat);
  }
  return *this;
}

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///////////////////////////////////////////////////////////////////////////////
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//=============================================================================
/*! dssmatrix+=dssmatrix operator */
inline dssmatrix& dssmatrix::operator+=(const dssmatrix& mat)
{
#ifdef  CPPL_VERBOSE
  std::cerr << "# [MARK] dssmatrix::operator+=(const dssmatrix&)"
            << std::endl;
#endif//CPPL_VERBOSE
  
#ifdef  CPPL_DEBUG
  if(N!=mat.N){
    std::cerr << "[ERROR] dssmatrix::operator+=(const dssmatrix&)"
              << std::endl
              << "These two matrises can not make a summation." << std::endl
              << "Your input was (" << N << "x" << N << ") += ("
              << mat.N << "x" << mat.N << ")." << std::endl;
    exit(1);
  }
#endif//CPPL_DEBUG
  
  for(long c=0; c<mat.VOL; c++){
    (*this)(mat.Indx[c],mat.Jndx[c]) +=mat.Array[c];
  }
  return *this;
}

//=============================================================================
/*! dssmatrix-=dssmatrix operator */
inline dssmatrix& dssmatrix::operator-=(const dssmatrix& mat)
{
#ifdef  CPPL_VERBOSE
  std::cerr << "# [MARK] dssmatrix::operator-=(const dssmatrix&)"
            << std::endl;
#endif//CPPL_VERBOSE
  
#ifdef  CPPL_DEBUG
  if(N!=mat.N){
    std::cerr << "[ERROR] dssmatrix::operator-=(const dssmatrix&)"
              << std::endl
              << "These two matrises can not make a sutraction." << std::endl
              << "Your input was (" << N << "x" << N << ") -= ("
              << mat.N << "x" << mat.N << ")." << std::endl;
    exit(1);
  }
#endif//CPPL_DEBUG
  
  for(long c=0; c<mat.VOL; c++){
    (*this)(mat.Indx[c],mat.Jndx[c]) -=mat.Array[c];
  }
  return *this;
}

///////////////////////////////////////////////////////////////////////////////
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//=============================================================================
/*! dssmatrix+dssmatrix operator */
inline _dssmatrix operator+(const dssmatrix& matA, const dssmatrix& matB)
{
#ifdef  CPPL_VERBOSE
  std::cerr << "# [MARK] operator+(const dssmatrix&, const dssmatrix&)"
            << std::endl;
#endif//CPPL_VERBOSE
  
#ifdef  CPPL_DEBUG
  if(matA.N!=matB.N){
    std::cerr << "[ERROR] operator+(dssmatrix&, dssmatrix&)" << std::endl
              << "These two matrises can not make a summation." << std::endl
              << "Your input was (" << matA.N << "x" << matA.N << ") + ("
              << matB.N << "x" << matB.N << ")." << std::endl;
    exit(1);
  }
#endif//CPPL_DEBUG
  
  dssmatrix newmat(matA);
  for(long c=0; c<matB.VOL; c++){
    newmat(matB.Indx[c], matB.Jndx[c]) +=matB.Array[c];
  }
  
  return _(newmat);
}

//=============================================================================
/*! dssmatrix-dssmatrix operator */
inline _dssmatrix operator-(const dssmatrix& matA, const dssmatrix& matB)
{
#ifdef  CPPL_VERBOSE
  std::cerr << "# [MARK] operator-(const dssmatrix&, const dssmatrix&)"
            << std::endl;
#endif//CPPL_VERBOSE
  
#ifdef  CPPL_DEBUG
  if(matA.N!=matB.N){
    std::cerr << "[ERROR] operator-(dssmatrix&, dssmatrix&)" << std::endl
              << "These two matrises can not make a subtraction." << std::endl
              << "Your input was (" << matA.N << "x" << matA.N << ") - ("
              << matB.N << "x" << matB.N << ")." << std::endl;
    exit(1);
  }
#endif//CPPL_DEBUG

  dssmatrix newmat(matA);
  for(long c=0; c<matB.VOL; c++){
    newmat(matB.Indx[c], matB.Jndx[c]) -=matB.Array[c];
  }
  
  return _(newmat);
}

//=============================================================================
/*! dssmatrix*dssmatrix operator */
inline _dgsmatrix operator*(const dssmatrix& matA, const dssmatrix& matB)
{
#ifdef  CPPL_VERBOSE
  std::cerr << "# [MARK] operator*(const dssmatrix&, const dssmatrix&)"
            << std::endl;
#endif//CPPL_VERBOSE
  
#ifdef  CPPL_DEBUG
  if(matA.N!=matB.N){
    std::cerr << "[ERROR] operator*(dssmatrix&, dssmatrix&)" << std::endl
              << "These two matrises can not make a product." << std::endl
              << "Your input was (" << matA.N << "x" << matA.N << ") * ("
              << matB.N << "x" << matB.N << ")." << std::endl;
    exit(1);
  }
#endif//CPPL_DEBUG
  
  dssmatrix newmat( matA.N, 0 );
  
  for(long c=0; c<matA.VOL; c++){
    long k(matA.Jndx[c]);
    std::vector< std::pair<long,long> >::iterator p;
    for(p=matB.Col[k].begin(); p!=matB.Col[k].end(); p++){
      newmat(matA.Indx[c],p->first) +=matA.Array[c]*matB.Array[p->second];
    }
  }
  
  return _(newmat);
}